Messages in this thread | | | Date | Thu, 24 Jun 2004 11:26:49 -0400 (EDT) | From | Zwane Mwaikambo <> | Subject | Re: [PATCH][2.6] Fix module_text_address/store_stackinfo race |
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On Thu, 24 Jun 2004, Rusty Russell wrote:
> I keep fighting to keep it static 8) > > How's this: > > Name: Fix race between CONFIG_DEBUG_SLABALLOC and modules > Status: Compiled on 2.6.7 > Version: -mm > Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (modified) > Signed-off-by: Zwane Mwaikambo <zwane@fsmlabs.com> > > store_stackinfo() does an unlocked module list walk during normal runtime > which opens up a race with the module load/unload code. This can be > triggered by simply unloading and loading a module in a loop with > CONFIG_DEBUG_PAGEALLOC resulting in store_stackinfo() tripping over bad > list pointers. > > kernel_text_address doesn't take any locks, because during an OOPS we > don't want to deadlock. Rename that to __kernel_text_address, and > make kernel_text_address take the lock.
Thanks, looks good, works here.
Zwane
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